The idea of Jailbreaking has been around for quite some time now. What it allows is more control over an iOS device. Hackers have been on it with every version of the system, allowing features which weren’t there is an official build.
In a latest update, axi0mX has tweeted about a new unpatchable method of unlocking the bootloader and exploiting bootrom on iOS devices. The method is called checkm8 (yes it is pronounced exactly the way it’s written). To understand this, users must know that to get around the restrictions set by iOS developers, users have to unlock the bootloader. Apple, in most of its previous updates, has made it almost impossible to do so, making jailbreaking a difficult task to commit to. After the tweet and the open-source resources provided by it, the person behind it opens up the opportunity for many iOS devices up to the ones which rock the A11 Chips. These may range from the iPhone 4S up to the iPhone X. (iPads and iPod may also be included in this list)
EPIC JAILBREAK: Introducing checkm8 (read "checkmate"), a permanent unpatchable bootrom exploit for hundreds of millions of iOS devices.
Most generations of iPhones and iPads are vulnerable: from iPhone 4S (A5 chip) to iPhone 8 and iPhone X (A11 chip). https://t.co/dQJtXb78sG
— axi0mX (@axi0mX) September 27, 2019
What makes the idea so unique is the fact that before this, this exploit for a public bootrom was only available up to the iPhone 4. The iOS researcher has uploaded it for free, claiming that he did so for the jailbreaking community. Readers should note that this is not a full jailbreak and casual jailbreakers should not read too much into the tweet. It is mainly focused at Hardware and Software experts. It would basically allow developers to enable JTAG. He did so in hope that someone may find a simple way to use it without proprietary hardware and software.
axi0mX realized this opportunity back in the summer of last year during the beta program for iOS 12. Apple’s patch for the iBoot USB code vulnerability allowed him to exploit it, though it did require direct hardware access. According to him, with this, he would be adding more to the exploit but the basic idea is for developers to come up with jailbreaks in a more convenient way such that regular users may just click a single button and have that device completely unlocked.